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MP3389 Fiches technique(PDF) 8 Page - Monolithic Power Systems

No de pièce MP3389
Description  12?밪tring, Step-up White LED Driver
PDF  16 Pages
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Fabricant  MPS [Monolithic Power Systems]
Site Internet  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP3389 Fiches technique(HTML) 8 Page - Monolithic Power Systems

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MP3389—12-STRING WHITE LED DRIVER WITH STEP-UP CONTROLLER
MP3389 Rev. 1.04
www.MonolithicPower.com
8
3/27/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
FUNCTION DIAGRAM
Control
Logic
+
-
Current Sense
Amplifier
+
-
PWM
Comparator
Oscillator
+
-
1.23V
OV
Comparator
+
-
+
-
LED1
+
-
DPWM
Oscillator
DPWM
Comparator
1.22V
Max
Min
Feedback
Control
5.5V
EA
LED OV
Comparator
Short String
Protection
Regulator
LED12
OVP
ISENSE
GND
VIN
VCC
DBRT
BOSC
ISET
COMP
OSC
EN
Enable
Control
600 mV
GATE
PGND
VFAULT
Current Control
Figure 1—MP3389 Function Block Diagram



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